Recuperative furnace.



PATENTED JAN. 22, 19077.l

RBRBDELL REGUPERATIVE PURNAGE.

AIPLIGATION FILED DEO. 29, 1905.

3 SHEETS-SHEET 1h @MMM 5M l QMM/M/ @d REGUPERATIVE FURNAGE.

.APPLICATION FILED DEO. 29 1905.,

' f t HIL,

` @Wwew REGUPERATIVE FURNAGE.

APPLICATION FILED DEO .29, 1905.

Qgikwww( @ZM M MILWAUKEE, wisconsin.

rsnnnnicir nennen. or

REGUPEFSTVE FUHNGE.

No. 841,664. A

Specication of Letters Patent.

Patented Jan. se, leer.

Application iled December Z9, 1905. Serial Nox 293.786.

To (LZZ whom t may concern: h

Beit known that I, Fnnnnnicr; Banner., a citizen of the United States, residin@r at `i\flilwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Recuperative Furnaces, of which the following is a speciiicat-ion, reference being had to the accompanying drawings, forming a part thereof. This invention relates to furnaces for heatin laiily to the construction of the recuperators for heating the air-supply to such furnaces by l section on the line 7 7',

the hot waste gases escaping therefrom.

The main objects of the invention are to provide a recuperator with a continuous vertical gas-flue in which soot and ashes will not lodge sufficiently to obstruct the passage of the products of lcombustion or waste gases from the furnace, te prevent the loosening and vdisplacementof the component arts o f the recuperator'by explosions or ot erwise, and thus avoid leakage, which would destroy or impair the eiiicie'ncy of the device, and generally tosimplify `and improve the construction andl operation of recuperators Ain thisclass of furnaces.

It consists in certain novel features of construction and in the peculiar arrangement and combinations of parts, as hereinafter particularly described, and pointed out in. the claims. I

In the accompanying drawings like letters designate the same parts in the several iig- .ures

tudinal section of a recuperator on the line i l1 4, Fig. 3. Fig.

the line 5 5, Fig. 3.

5 isa horizontal section on Fig. 6 is a plan view of a Fig. 7 is a vertical crossseparator-,block Fig. 6. Fig. 8 is a perspective view of a whole and a fractional separator-block, showing their interlocking end formations and an intermediate bridgeretorts, muflies, &c., and more particu-l section, the left-hand half being on the line 10 1()4 and theright-hand half on the line y11 11, Fig. l1, showing recuperators of a modified construction. Fig. 11 is a vertical -longitudinal section on the line 12 12, Fig. 10. Fig. 12 is 'an enlar ed inside view of a division or partition b oxck used in this -forin of recuperator. Fig. l13 is a plan or top edge view, and Fig. 14 is an end view, of the same. Fig. 15 is an enlarged side view of one of the separator-blocks used in connection with division-blocks like thatv shown in Figs. 12,

same.

Referring to Figs. 1,2, and 3, c, designates the fire-boxer generator-chamber, b thecomthe furnace-walls and continuous series of vertically-disposed solid partition blocks or tiles g, dividing said space or chamber into two outer air-fines h land an intermediate gas- Air is admitted to two lor more of the iiues 7i on each side of the furnace through openings j, which may be located at the front end of the furnace, as shovm in Fig. 5, and after being heated by its passage through said the grate through openings k and into the shown in Fig. 1.

The waste gases or products of combustion therefrom at the bottom into ducts m, as 1ng dicated by arrows on Fig. 1, the ducts m leadl ing into a 'chimney or smoke-stack. (Not shown.) Y The separator-blocks f are formed with longitudinal grooves n, as shown in Figs. 6,

7, and 8, to receive and hold the uppgr/-and block for covering the joint between them in l lower edgesof the partition-blocks g, and beone of the'air-iiues. Fig. 9 is a perspective view showing the under side of a fractional separator-block. v

Fig. 10 is a vertical crosstween said grooves they are formed with i large opemngs o, which afford tree communication between the several parts of the flue 'I'.

-13,and 14; and Fig. 16 is an end view of the` bustion-chamber, and 'e e retorts inclosed .in

iiues is discharged into the fire-box aY below enter the gas-flues i at the top and escapel across the flue space or chamber inclosed by-j Y combustionechamber 'through openings Z, as

IOO

. .zo blocks g are preferably formed on their adand a direct unobstructed passage. for the Waste gases or roducts of' combustion from the top. to the ottom of each recuperator.. At theirv` sides, vwhich are. parallel with the -5 grooves 'n and extend beyond the outer faces yw ltheir ends the separator-blocks are preferably formed, as shown in Fig. 8, withfinterlocklngprojections which produce staggered or broken joints between them in the adjoining air and gas fines. To further provide against leakage between theair and gas flues, the end joints between the separator-blocks in the air-fines are covered by bridge pieces or blocks p, which are let into recesses in said separator-blocks flush with their upper faces, as shown in Figs. 5 and 8, and the partitionjoining' vertical edges,v as shown in Fig. 5, with rabbet or tongue-and-groove joints.

At the front and rear ends of the recuperator each tier or row of separator-blocks is filled out by fractional blocks f, which have no o nings throughthem, as shown in Figs. 8 an :9. f

Some of the separator-blocks are or may be formed with recesses or indentations g to afford communication between adjoining airiiues arranged one above another, as shown in Figs. 3 to 8, inclusive.

The several air-dues h may be connected with each other in various Ways, and the openings for supplying air thereto and for delivering the heated air into the furnace may be variously arranged, and the number and with relation to other parts of the furnace may also be varied according to varying conditions and circumstances. Y. Referring to Figs. 10 to 16, inclusive, showing recuperators of a modified construction, but still embodyingV the principle and essential features of the invention, the separatorblocks f are made of quadrangular prismatic'shape, as shown in Fi s. 15 and 16, and are set in the furnace, as s own in Fig. 11, with their lateral faces inclined. They are formed parallel to their end faces, with grooves n to receive and hold the adjoining end edges of the division-blocks g', 'which are formed, as shown in Figs. 12 and 14, with-correspondingly-shaped indentations r. These divisional blocks may be fluted or corrugated on their 4outer faces next to the air-fines zy to increase their heat-radiating area. Soot or ashes deposited on separator-blocks of this form Will slide off from their inclined upper faces and fall to thebottom of the gas-flues c', from which they can be readily removed. They do not, however, like the blocks f, divide the spaces outside of the partitionarrangement of the recuperators asa whole blocks horizont ally into separate and distinct 6 5 air-fines, as shown in Figs. l, 3, and 4.

Various modifications in details of construction and arrangement of parts other than those liereinbefore noted may be made withoutdeparting from the principle and intended scope of the invention.

1. In a recuperat'ive furnace, a recuperator comprising a continuous series of solid partition-tiles dividing the recuperator-chamber into air and gasl iiues, and separator-blocks grooved to receive the edges of said partitiontiles and to prevent lateral displacement thereof and bearing against and bracing o posite walls of the recuperator-chamber, suhstantially as described.

2. In a recuperative furnace, a recuperator comprising walls which inclose a chamber, a continuous series of vertically-dis osed solid partition-tiles dividing said cham er into air and gas flues, and horizontally-disposed separator-blocks grooved to receive the adjoining edges of said partition-tiles and projecting on one side beyond their outer facesv and bearing against and bracing opposite Walls of said chamber, substantially as described. y

3. In a recuperative furnace, a recuperator comprising walls inclosing a flue chamber or space, a continuous series of solid verticallydisposed partition-tiles dividing said chamber into air and gas flues, and horizontallydisposed separator blocks grooved to receive the upper and lower edges of said partition-tiles and extending on one side beyond the outer faces thereof and bearing against and bracing opposite walls of said chamber, substantially as described.

4. In arecuperative furnace, a recuperator comprising walls inc-losing a lflue spacel or chamber, solid, partition-tiles dividing said space into airand gas fines, and separatorblocks extendingacross said chamber and bearing on opposite'sides against the walls of lsaid chamber, saidl separator-blocks being grooved between and parallel with said Walls to receive the upper and lower edges of said partition-tiles and having openings through them in the gas-Hue space between the partition-tiles, substantially ,as described.

5. In a recuperative furnace, arecuperator comprising walls inclosing a flue-chamber, continuous series of solid partition-tiles dividing said chamber into air and gas flues, and separator-blocks having interlocking projections at their adjoining ends and longitudinal grooves in the under and upper sides to receive the upper and lower edges of the partition-tiles beyond which they project and bear against opposite side walls of said chamber, substantially as described.

6. In a recuperativ( furnace, a recuperator comprlslng walls mclc sing a flue chamber-or space, vertically-disposed partition-tiles di- ITO vond which they project against opposite Walls of said chamber, and 'bridge-bleaksCGVM ermg jomts between adjommg ends ef the separator-blocks, substantialy as described. i

In witness Wherefief hereto ax my sig- :nature vu1 pesence 0i two Wltnesses.

FREDERCK BREDEL.

"Witnesses: 

